Guangzhou Yuxin Environmental Protection Technology Co., Ltd
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COD ammonia nitrogen total phosphorus total nitrogen detector (economical)
Fast and accurate measurement, simple operation, advanced long-life cold light source, data storage, and power-off protection
Product details

Brief introduction

The RB-401 COD ammonia nitrogen total phosphorus total nitrogen detector is an economical multi parameter measuring instrument developed by our company. The instrument can measure four items: COD, ammonia nitrogen, total phosphorus, and total nitrogen. All testing items refer to relevant standards; It has functions such as fast, accurate, easy to operate, data storage, and data output; An optional printer can also be used to print measurement data in real-time, making it convenient for on-site analysis and discussion.

Applied to chemical and pharmaceutical enterprises, sewage treatment, environmental monitoring, water treatment plants, scientific research institutions, and universities, etc; Suitable for monitoring industrial wastewater, domestic sewage, surface water, and groundwater.

2、 Technical parameters

Table 1 Technical Parameters of RB-401 COD Ammonia Nitrogen Total Phosphorus Total Nitrogen Detector

Measurement parameters COD Ammonia nitrogen total phosphorus total nitrogen
measuring method HJ/T399-2007
Rapid digestion spectrophotometric method for water quality
HJ535-2009
Nessler's reagent spectrophotometric method for water quality
HJ671-2013
Ammonium molybdate spectrophotometric method for water quality
HJ 636-2012
Alkaline persulfate digestion photometric method
Measurement range 5-5000mg/L (segmented) 0.01-50mg/L (segmented) 0.01-12mg/L (segmented) 0-100mg/L (segmented)
resolution 0.001 mg/L
accuracy ≤±5%(F.S)
Dissolve and stabilize 165 ℃, 15 minutes No need to dissolve 125 ℃, 30 minutes
Anti chlorine interference <1000mg/ L - -
Batch processing volume 12 water samples (optional 9 or 25)
Instrument dimensions 270*200*120mm
Instrument weight Host weight<2kg
Instrument power supply AC(220V±5%),50Hz
ambient temperature 5~40℃
ambient humidity ≤ 85% non condensing

3、 Functional Features

1. COD detection refers to the HJ/T399-2007 standard; Ammonia nitrogen determination refers to HJ535-2009; Total phosphorus detection refers to HJ670-2013; Refer to HJ 636-2012 for total nitrogen detection.

2. Adopting semiconductor cold light source emitter and new optical circuit design, it has strong anti-interference ability, high measurement data accuracy, good stability, and a light source lifespan of tens of thousands of hours.

3. The measurement range is wide, and the range selection is based on the actual situation of the water sample.

4. Low reagent usage, low operating costs, and strong anti-interference ability.

5. The measurement host and digestion system are separated, controlled by independent power sources, and do not interfere with each other, which can effectively reduce measurement errors.

6. Dissolving temperature control range: ≤ 200 ℃, time control range ≤ 999 minutes, automatic timing;

7. Large screen LCD display, Chinese operation panel, simple and convenient.

8. It has data storage function (time, concentration, etc.) and can save 30000 measurement data and 100 standard curves.

9. Power off protection function ensures that the instrument is not damaged and measurement data is not lost.

10. There is a data output interface that can be connected to a computer to transmit measurement data to the computer.

11. Automatic constant temperature control system, PID regulation technology, constant temperature and high accuracy in the digestion process.

12. Intelligent design for fault self diagnosis makes instrument management and maintenance simple and convenient.

13. 7-point calibration mode, automatically calculates slope, intercept, and correlation coefficient, with high measurement accuracy.

14. Optional printer that can directly print measurement data and historical data;

4、 Standard List

Table 2 Standard List of RB-401 COD Ammonia Nitrogen Total Phosphorus Total Nitrogen Detector

Serial Number name quantity Serial Number name quantity
1 Measurement host 1 unit 9 power line 2 pieces
2 12 hole intelligent digestion instrument 1 unit 10 data line 1 piece
3 Dissolve the protective cover 1 piece 11 Colorimetric dish 4 of them
4 COD reagent 1 set 12 Colorimetric dish rack 1 piece
5 Ammonia nitrogen reagent 1 set 13 Dissolving tube cooling rack 1 piece
6 Total phosphorus reagent 1 set 14 operation instructions 1 copy
7 Total nitrogen reagent 1 set 15 Certificate of Conformity/Warranty Card 1 copy
8 Dissolving tube 12 pieces
 RB-401型cod氨氮总磷总氮检测仪测量主机
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